20956850

素因数分解:

$2^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{97}}^1\times {\mathrm{149}}^1$

素因数の和:287

約数の個数: 48

約数和(自身を含む): 41013000

約数和(自身を除く): 20056150

約数列:

[1, 2, 5, 10, 25, 29, 50, 58, 97, 145, 149, 194, 290, 298, 485, 725, 745, 970, 1450, 1490, 2425, 2813, 3725, 4321, 4850, 5626, 7450, 8642, 14065, 14453, 21605, 28130, 28906, 43210, 70325, 72265, 108025, 140650, 144530, 216050, 361325, 419137, 722650, 838274, 2095685, 4191370, 10478425, 20956850]

約数ペア:

[(1, 20956850), (2, 10478425), (5, 4191370), (10, 2095685), (25, 838274), (29, 722650), (50, 419137), (58, 361325), (97, 216050), (145, 144530), (149, 140650), (194, 108025), (290, 72265), (298, 70325), (485, 43210), (725, 28906), (745, 28130), (970, 21605), (1450, 14453), (1490, 14065), (2425, 8642), (2813, 7450), (3725, 5626), (4321, 4850)]